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5.3.10 GSD Files
A PROFIBUS-DP master can exchange data with various slave devices. In order to
indentify a slave device, it is necessary to obtain the technical data of the device
itself. The le where the data is described is called Device Description Data File
(GSD).
Because of the importance of GSD le, please read it carefully before using the
PROFIBUS module. The GSD file is provided in pure text format with detailed
comments.
As a DP slave device, the PROFIBUS module supports protocol of V0 revision.
The PROFIBUS module's data interface is optional,module 1 is a 16 word input/
output interface,module 2 is a 32 word input ,1 word output interface.
5.3.11 Information Exchange
A variety of information from the Acuvim II meter can be transmitted by the
PROFIBUS module, such as electrical quantities and other parameters. The basic
communication method of the Acuvim II meter is RS-485, which uses protocol
of MODBUS-RTU. In order to use the same address lists as MODBUS-RTU, the
communication formats of PROFIBUS-DP, which is 16 word input/output is
categorized in the same way as MODBUS-RTU.
It is recommaneded to refer to the communicaion part of the Acuvim II
manual (Chapter 6) for the list of MODBUS-RTU addresses, function codes, the
relationships between values, etc. Some examples are:
1. There are various function codes, such as 01H, 02H,03H, 05H,10H, for the
various categorized parameters. Dierent function codes have dierent formats
of query and response frames.
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